Water landing means that the spacecraft is limited to a certain volume/mass ratio in order to float (preferably not upside down), withstand some waves, under/o

Water landing means that the spacecraft is limited to a certain volume/mass ratio in order to float (preferably not upside down), withstand some waves, under/over pressure and 'salty water conduct electricity' problems etc. or alternatively turn to a submarine. I doubt water landing is so much easier than ground landing. And what you gonna do in case of crash-landing or some hull cracks?